A suburb of Oklahoma City has been leveled by what appears to be a massive tornado that some are calling the most destructive in the history of the world. Yes, seriously. The terrifying storm struck just south of the city on Monday afternoon, ripping apart homes and other buildings, including at least one elementary school.

The National Weather Service issued a tornado emergency, which is apparently unusual even for this part of the Midwest. It indicates that widespread damage and fatalities were likely. The images from the scene are horrifying, and one news anchor said it was the "biggest destructive tornado in the history of the world."

Downed power lines and gas continue to pose risks: As always with any disaster, the aftermath can also be very dangerous. The extent of the damage isn't yet clear, but the scene is likely very unstable, chaotic, and dangerous.

The story is developing so much more is likely to come in overnight. But one thing we do know is that this isn't over and that this is likely to go down in history as one of the worst storms in history. "Our worst fears are becoming realized this afternoon," Bill Bunting, with the National Oceanic and Atmospheric Administration's Storm Prediction Center, told CNN Monday afternoon.

It isn't the kind of thing you can get out of your head. This story will continue to develop and we will follow it, but for now, our hearts are with everyone in Oklahoma City and we are praying that most were able to take shelter.